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29 results for “Extinct Plants”
Data from: Interspecific variation in ploidy as a key plant trait outlining local extinction risks and community patterns in fragmented landscapes
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Extinct plants of North America north of Mexico
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Projected climate change threatens significant range contraction of Cochemiea halei (Cactaceae), an island endemic, serpentine adapted plant species at risk of extinction
<p>Threats faced by narrowly distributed endemic plant species in the face of the Earth's sixth mass extinction and climate change exposure are especially severe for taxa on islands. We investigated the current and projected distribution and range changes of Cochemiea halei, an island endemic cactus. This taxon is of conservation concern, currently listed as vulnerable on the International Union for the Conservation of Nature Red List and as a species of special concern under Mexican federal law.</p> <p>The goals of this study are to 1). identify the correlations between climate variables and current suitable habitat for C. halei; 2). determine if the species is a serpentine endemic or has a facultative relationship with ultramafic soils; 3). predict range changes of the species based on climate change scenarios.</p> <p>Location: The island archipelago in Bahía Magdalena on the Pacific coast, Baja California Sur, Mexico.</p> <p>Main conclusions: The occurrence of the species is found to be strongly correlated with ultramafic soils. The most important climate predictor for habitat suitability is annual temperature range. The species is predicted to undergo range contractions from 21% to 53%, depending on the severity and duration of exposure to climate change. The broader implications for a wide range of narrowly adapted, threatened and endemic plant species indicate an urgent need for threat assessment based on habitat suitability and climate change modeling.</p>
Dataset: Drivers of local extinction risk in alpine plants under warming climate
<p><span>The scarcity of local plant extinctions following recent climate change has been explained by demographic inertia and lags in the displacement of resident species by novel species, generating an "extinction debt". We established a transplant experiment to disentangle the contribution of these processes to local extinction risk of four alpine plants in the Swiss Alps. Projected population growth (λ) derived from integral projection models was reduced by 0.07/°C of warming on average, while novel species additionally decreased λ by 0.15 across warming levels. Effects of novel species on predicted extinction time were greatest at warming <2°C for two species. Projected population declines under both warming and with novel species were primarily driven by increased mortality. Our results suggest that extinction debt can be explained by a combination of demographic inertia and lags in novel species establishment, with the latter being particularly important for some species under low levels of warming.</span></p>
Projected climate change threatens significant range contraction of Cochemiea halei (Cactaceae), an island endemic, serpentine adapted plant species at risk of extinction
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Dataset: Drivers of local extinction risk in alpine plants under warming climate
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Data from: Colonization and extinction dynamics among the plant species at tree bases in Paris (France)
1. In cities, trees growing along streets could play an important ecological role for spontaneous plants that grow at their bases. For example, these trees could represent corridors that allow species to move in the urban matrix by potentially connecting large green spaces (e.g., parks, gardens, etc.) We considered sets of urban trees in 15 streets as metapopulations for 15 plant species. Our objective was to determine the factors influencing the dynamics of colonization and extinction of populations based on the distance of the streets from green spaces and the biological traits of each species. 2. The species in 1,324 tree bases of the Bercy district of Paris were surveyed annually from 2009 to 2015. For each species and each street, we used SPOMSIM software to identify the best-fit metapopulation model: the propagule rain model (PRM), Levins model (LM), and the PRM and LM with a fixed extinction or a rescue effect. 3. The results demonstrated that the species more often conformed to the PRM in streets near green spaces, which suggested that green spaces could act as the sources for the populations in those streets. Species with seeds with long-term persistence more often conformed to the PRM, indicating that a soil seed bank helps species invade entire streets. Finally, a higher percentage of species with a short height conformed to models with a rescue effect, which indicated that those species resisted the effects of weeding by the city technical services more often than taller species. 4. Synthesis and applications. This study showed how the biological traits of species and the geography of the district determine the dynamics of the plants in the streets, and the results may provide important information for biodiversity management in cities.
Data from: Colonization and extinction dynamics among the plant species at tree bases in Paris (France)
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FIGURE 1 in Mind your app: Could plant ID applications lead to an increase in extinction risk?
FIGURE 1. Plant ID applications performance in Andalusia (south Spain). (A) Study area by Sánchez-Romero (2022) (B) Percentage success rate for the apps analyzed. (C) Ononis varelae Devesa (1986: 84), an endemic Leguminosae taxon from the southwestern Iberian Peninsula, not correctly identified by any of the apps tested.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.